500 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
green at base, marked with black and reddish. Spiracles very conspicuous; pro- 
thoracic one large and black, fins abdominal black, the rest orange. 
The body tapers towards the tail; pale green, wrinkled above. A broad dorsal. 
longitudinal band, with ■ median line green line which ends in a red streak on supra- 
anal plate. Lateral line folded and large, interrupted and marked irregularly with 
purple on the thoracic segments. 
Length, 22F am t August 15 to 18, 1882] observed at Brunswick, Me. 
49. Brepho8 in fans Moschler. 
In this case I depart from my usual rule not to mention any insect 
unless positively known to feed on the tree stated, since there is so 
strong presumptive evidence that the larva of this beautiful moth feeds 
on the birch in this country as well as in Europe. I observed it flying 
among birches at Cambridge, Mass., early in the spring ot 1862 or 1863. 
I quote the following summary of its habits, published by Mrs. Dim- 
mock in Psyche (iv, p. 273) : 
Brepho8 infans Moschler (Wieu. entom. monatsschr., Mar. 1862, vol. ("», p. 134-136. 
pi. 1, iig. 6). Harris (Entonj. corresp., 1869, pi. 1, tig. 4) figures the imago of this 
species. Lintner (Entom. contrib., No. 4, 1878, p. '2"2T-221>) gives notes upon the 
habits of the imago which render it almost certain that the larva feeds upon Betula. 
The larv;e of the European species of this genus feed upon Brtula alba, the larva of 
Brtphos jMirthenias living between leaves that it spius together upon high twigs. 
The imagos of B. in fans are not rare about Betula alba, extremely early in the spring, 
both in eastern and western Massachusetts. 
50. Catocala relicta Walk. 
The subjoined summary of what is known of the habits of this motb 
is copied directly from Mrs. Dimmock's article on birch insects, in 
Psyche (IV, p. 273). 
(atocala relicta Walk. (List. Lep. ins. Brit, inns., 1857, pt. 13, p. 1192, 1193). Bunker 
(Can. entom., May. 1883, vol. 15, p. 100) states that Populus is the favorite food-plant 
of the larva of this species. Hulst (Bull. Brooklyn entom. soc, July, 1884, vol. 7, p. 
4 W ) says "Food-plant, white birch and silver poplar; and probably all species of 
Betula and Populus. v The same author (/. c, June, 1854, vol. 7, p. 15-16) gives struc- 
tural characters and habits of the larva' of Catocala. The European C. fraxina, re- 
garded by some authors to be a synonym of C. relicta, feeds, as larva, on Populus, 
Betula, Acer, Chnus, Quercus, and Fraxinus. C. relicta has been reared by C. Dim- 
mock, in Springfield, Mass., from a full-grown larva taken under circumstances which 
made it almost certain that its food-plant was Acer. 
51. Xoctuid? or Xotodontid! larva. 
This caterpillar occurred on the white or paper birch, near the sum- 
mit of Thorn Mountain, Jackson, X. H. It was mistaken for a folded 
leaf, and was feeding conspicuously on the tree. 
Larva. — Body very thick and soft, tapering rapidly towards the small anal legs, 
which are about half The size of the others, the end of the body being often held 
straight out. Head large, but not so broad as the prothoracic segment: pale green 
like the rest of the body, with four longitudinal white bands, the outer ones extend- 
ing nearly to the base of the antennas ; from and including the eyes a broad reddish 
white patch, and a similar patch on the side of the prothoracic segment, and a much 
larger one on the side of the mesothoracic segment. Body pale pea-green, nearly the 
